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Abstract: We have searched for correlations between the pointing directions ofultrahigh energy cosmic rays observed by the High Resolution Fly-s Eyeexperiment and Active Galactic Nuclei AGN visible from its northernhemisphere location. No correlations, other than random correlations, have beenfound. We report our results using search parameters prescribed by the PierreAuger collaboration. Using these parameters, the Auger collaboration concludesthat a positive correlation exists for sources visible to their southernhemisphere location. We also describe results using two methods for determiningthe chance probability of correlations: one in which a hypothesis is formedfrom scanning one half of the data and tested on the second half, and anotherwhich involves a scan over the entire data set. The most significantcorrelation found occurred with a chance probability of 24%.



Autor: R. U. Abbasi, T. Abu-Zayyad, M. Allen, J. F. Amman, G. Archbold, K. Belov, J. W. Belz, S. Y. BenZvi, D. R. Bergman, S. A. Blake,

Fuente: https://arxiv.org/







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